Cloth-cutting machine.



E. M. WARING. CLOTH CUTTING MACHINE. APPLICATION mid 1uLY22, 1914.

Patented Dec. 19, 1916.

2 SHEETS-SHEET l- 8&1, 111 attoamena NM Mn N E. M. WARING. CLOTH CUTTINGMACHINE.

APPLICATION FILED JULY22, 1914. 1,209,524,

2 SHEETS-SHEET 2.

Patented Dec. 19, 1916.

EDWARD M. wanme, or BROOKLYN, New YORK.

CLOTH-Corrine MACHINE.

Specifioation'of Letters Patent.

Patented Dec. 1a, 1916.

Application filed'J'ul'y 22, 1914. serial 116. 852,415.

To all whom it may concern:

5e it known that I, EDWARD M. TAKING, a citizen of the United States ofAmerica, and a residentof Brooklyn, Kings county, New York, haveinvented certain new and useful Improvements in Cloth-Cutting Machinesof which the following is a specification.

This invention relates to cloth cutting machines and the object of theinvention is to improve the construction of the machine in general andto add certain novel and useful features with a view of increasing theefficiency of the machine and improving the operation thereof.

More particularly the improved and novel features of the inventionrelate to the means for supporting the motor and the arrangement andoperation of the sharpening means and the knife guard. In this respectthis invention is a continuation of and improve ment upon the inventiondescribed in my pending application Serial Number 787.070.

T he several objects of the invention and the manner in which I proposeto carry out the various improvements will appear in detail from thefollowing specification and by reference to the accompanying drawings inwhich Figure 1 is a side view of a cloth cutting machine embodying myinvention, with the upper part of the machine broken away and with partsin section. Fig. 2 is a plan view of the handle and adjacent parts. Fig.3 is a sectional detail view of the guard taken on line 33 of Fig. 1.Fig. 4 is a plan detail view partly in section of the sharpening meansand adjacent parts inmiediately beneath the motor. Fig. 5 is a sectionalview taken on line 5-5 of Fig. 4, and Fig. 6 is a view of a brakemechanism. Fig. 7 is a somewhat diagrammatic view showing a part of myinvention applied to a cutter having a reciprocating knife.

As illustrated in the drawings the machine comprises the following mainelements, a motor 10, a knife ll driven-bythe motor, a standard 12 forthe support of the various parts, a base 13, a switch mechanism 1 ahandle 15, the sharpening means 16 and the knife guard 17. The base 13is of usual construction for this type of machine. Suitably secured toit is the standard 12 which generally is in the form of a one-piececasting provided with a stud 18 on which the knife rotates, The standardits form and construction embodies some of the features guard 11.

The motor 10 comprises the usual commutator and brushes, not shown astheir constructlon 1s not novel as far 'as illllSCllSOlOSlllGlSconcerned, the armature 23, the field coil 24 and the pole pieces 25.The core 26 of the field coil is a'pertured at 27, and through theaperture 27 passes a sleeve 28 having an enlargement :29 which fitswithin the aforesaid socket 19 in the standard. The sleeve 28 serves asa bushing for the armature shaft 30, which is provided with a shoulder31 bearing against washers 32 which rest on the bushing 23. i Thebushing or sleeve 28 is clamped firmly in the socket 19 by screws 33 asshown, and the core 26 of the field coil is pinned to the sleeve 28 by apin 22-. Thus the sleeve 28 is the sole connecting member between thestandard and the motor and is the sole direct supporting means for thelatter. 34 is a pinion suitably secured to the armature shaft and whichdrives the gear 35 secured to the knife. By means of this constructionthe motor may be entirely as-. seinbled as a unit, the sleeve 28inserted and clamped to the core 26, the pinion 34 secured to the shaft,and thereafter the parts are mounted by dropping the sleeve into thesocket l9 and clamping it.

one object of the invention is to construct the machine in such a mannerthat the power is out off automatically when the machine is not in use.To this end the following means are provided: The handle 15 is in thisin stance divided into a fixed po1'tion 37 and a movable portion 38. 39is a bracket secured to the machine for the support of the fixed handleportion 37 and to which the movable handle portion 38 is pivoted by apin 1-0. il is a spring which normally keeps the handle portion inupward or off position, in which case the lever 12 of the switch 14: isautomatically pushed upward or into off position the yielding link 13connecting said lever to the handle portion 38. It follows that when theoperator of the machine puts his hand on the handle and closes the same.the power is automatically turned on and vice versa.

Another object of the invention is to provide mea s for automaticallymoving the guard down in front of the knife when the power is ofi andthe machine not in use. The guard is in the form of a curved plate 17having an enveloping portion 45 which envelops or overlaps the knife 11as best seen in Fig. 3. A curved rack 46 is secured to the guard at 47and slides into the afore said groove 21 in the standard when the guardis up. The rack 46 meshes with a gear 48 secured to the shaft 49, Fig.5, which is journaled in lugs 50, 50 of the standard or frame 12. 51 isa gear secured to the shaft 49 by a. screw 52. 53 is a gear which isformed with a. collar 54 and which is loose on the shaft 49, butclutched into or in driving engagement with the gear 51 by means of thesaid screw 52, the head of which projects into a recess 55 in the gearand collar 53-54. 56 is a spring which keeps the gear 53 in drivingengagement with the gear 51. 57 is a rack which engages the gear 53 torotate the latter. The said rack is slotted and in the slot 58 moves apin 60 fast in the end of the arm 61 which latter is secured to themovable handle portion 38 on the pin 40, Fig. 2. 62 is an adjustablestop on the rack 57. It is in the form of a housing which slides on saidrack and which is provided with teeth 63 which engage the teeth of therack, by reason of the expansion of the spring 64 within the stop 62.The latter is moved on the rack 57 by depressing the housing 62 to freethe teeth 63 from the rack after which the stop may be adjusted on therack. The operation of these parts is as follows: Then the handle isclosed by the operator the arm 61 is swung upwardly on the pivot 40 andthe pin 60 in said arm strikes the stop 62 on the rack 57 moving thelatter forwardly or to the right in Fig. 1. This causes a clockwiserotation of the gear 53 which through the screw 52 rotates the shaft 49and gear 48. The rotation of the latter causes the rack 46 and with itthe guard 17 to be moved'upward to expose the cutting portion of theknife. In other words the operation of the handle automatically movesthe guard as described through the instrumentalities describedimmediately above. This construction presents several advantages. Whenthe machine is not in use, the knife is at all times guarded to preventaccident. Again, when the operator commences to cut, he does not have touse his handsto remove the guard from the knife.

In order to sharpen the knife, the guard must be moved upward asexplained and the sharpening wheels brought into contact with the knifewhile the latter is being rotated. These operations are accomplished bythe following means: The sharpening wheels 16 are mounted as usual infront of the knife in a bracket 65 which is pivoted on the aforesaidshaft 49. A spring 66-Fig. 4

normally keeps the wheels 16 away from the knife in the position shownin Fig. 1. 67 is a rack adapted to engage the aforesaid gear 51 fast tothe shaft 49. The rack is operated by an arm 68 fast on a shaft 69towhich shaft a thumb piece 70 is secured. The rack 67 is provided witha blank portion, without teeth, indicated at 71 and whereby the gear 51may be rotated without being operated upon by said rack 67, as exsiredto sharpen the knife, the operator first closes the handle and the guardis auton'ratically moved upward to expose thecutting edge of the knife.During this operation the gear 51 is rotated but is not in engagementwith the rack 67 because of the blank portion 71 of the latter. Next theop erator depresses, with the right thumb, the finger piece 70 therebylifting the arm 68 and moving the rack 67 forward, which first strikesthe collar 54 by means of the rack cam 72 to unclutch the gear 53 fromthe shaft 49 to prevent rotation of said gear while it is in engagementwith its rack 57. The forward movement of the rack 67 thereafter causesrotation of the gear 51 and shaft 49, and the pin 73 is rotated andstrikes the bracket 65 and moves the sharpening wheels into contact withthe knife. When the operator lets go of the finger piece 70, the spring76 brings the arm 68 back to normal position carrying with it the rack67, and the aforesaid spring 66 moves the wheels 16 upward. As soon asthe rack 67 has been returned to its normal position, the spring 56automatically forces the gear 53 into clutch with the gear 51 and shaft49. When the operator lets go of the handle portion 38, the handle isopened by the spring 41 and the rack 57 returned to its normal positionwhere it is stopped by a stop 80 striking the housing 81 whichoscillates on the shaft 49 and keeps the racks in contact with thegears. The return movement of the rack 53 rotates the shaft 49 in ananti-clockwise direction and lowers the guard 17.

From the foregoing it will be seen that I have provided novel means formounting and supporting the motor; that means are provided whereby theguard is automatically operated depending upon whether the machine is inuse or not, or whether the knife is to be sharpened; further thatoperating means for the grin ing Wheels. are

ranged for cooperation with the operating means for the guard in theproper sequence.

Fig. 6 illustrates a brake mechanism in which 90 is a brake shoesuitably pivoted to the machine at 91 and connected to the aforesaid arm61 by a link 92. When the operator lets go of the handle portion 38 thearm 61 is moved down as explained and the brake shoe 90 is automaticallymoved down to brake the armature 23 or some other movable part of themachine whereby the knife is stopped immediately after the current iscut off.

Fig. 7 shows some of the above features applied to a straight knifemachine. In this figure the same reference numerals are used as forFig. 1. In addition the knife is marked 111 and the guard 117 whichcarries the rack 146. The closing of the handle operates the rack 57 andgear 53 to rotate the shaft i9 which carries the gear 48 which in turnmeshes with the rack 1&6 to lift the guard 11?. 100 represents a knob orhandle for moving the shaft 49 sidewise, after which the guard may beadjusted vertically by hand.

With reference to the operation of the guard it is to be noted that theguard is always guarding the operators hand above the cloth to be cutand that the stop 62 is adjusted to move the guard a predetermineddistance.

While I have described the invention with reference to a specificdisclosure it will be understood that I do not wish to be limitedthereto but that the construction may be varied within the scope of theclaims.

I claim 1. The combination of a. standard, a knife mounted thereon, amotor for driving said knife, a. supporting member for said motorprojecting through a portion of the same and means for clamping saidsupporting member to the said standard.

2. The combination of a. standard, a knife, a motor for operating saidknife, and 001m prising a field coil and core, supporting means for saidmotor, means for securing said field coil and core to the saidsupporting means and means for securing the latter to the said standard.

3. The combination of a standard, a knife, a motor for operating saidknife and com-- prising a shaft, a field coil and core, a. memherdisposed within the field coil and core and adapted to receive the saidmotor shaft to support the motor, means for securing said field coil andcore to the said member and means for securing the latter to the saidstandard.

4. The combination of a standard, a knife, a motor for driving saidknife and comprising an armature, a vertically disposed armature shaftand a horizontal field coil and core, a bushing extending through saidfield coil and core and surrounding the said armature shaft, means forsecuring the field coil and core to the said bushing and means forsecuring the latter to the said standard.

5. The combination of a standard, a knife, a motor comprising anarmature, an armature shaft and a field coil and core, said armatureshaft extending downwardly through said field coil and core, and asleeve clamped to said standard and extending upwardly through saidfield coil and core, and adapted to receive said armature shaftand tosupport said motor.'

6. In a cloth cutting machine the combination of a knife, a motor foroperating it, a switch mechanism controlling the current to the motor,an operating handle, a movable portion on the same, means forautomatically moving said movable handle portion into an off positionwhen said 'machine is not being operated and means for automaticallyoperating said switch mechanism to cut off the current for the motorwhen said handle portion is moved into its off position.

7. In a cloth cutting machine the combination of a standard, a rotatableknife mounted thereon, a. motor supported above I said standard andknife for rotating the latter, a switch mechanism for controlling thecurrent to the motor, automatic means for operating said switchmechanism to cut off the current from said motor when the said machineis not being operated and operating connections between said automaticmeans and the said handle.

8. In a cloth cutting machine the combination of a standard, a knife, amotor for operating the latter, a handle, a movable portion thereon, aswitch mechanism controlling the current to said motor, automatic meansfor moving said movable handle portion into an off position when saidmachine is not being operated and automatic means for simultaneouslytherewith operating said switch mechanism to cut off the current to thesaid motor.

9. In a cloth cutting machine the combination of a knife, a motor foroperating it, a switch mechanism, an operating member in the latter, anoperating handle, a movable portion thereon, means for automaticallymoving the latter into an off position when said machine is not beingoperated and means for automatically operating said member in the switchmechanism when the said movable handle portion is moved into its offposition.

10. In a cloth cutting machine the combination of a knife, a motor foroperating it, a switch mechanism controlling the current to said motor,an operating handle, a movable portion thereon adaptedto be movedmanually in one direction to operate the machine, means forautomatically moving the movable handle portion into an off positionwhen said machine is not being worked and connect-ions between saidmovable handle portion and said switch mechanism for operating thelatter to automatically cut off the current from said motor when saidmovable handle portion is moved into its off position and to turn thecurrent on when said handle portion is manually operated.

11. In a cloth cutting machine the combination of a knife, a motor fordriving it, a switch mechanism for the motor, an operating handle, amovable portion thereon, connections between the latter and the saidswitch mechanism and automatically operated means for maintaining saidmovable handle portion in an off position to operate the said switchmechanism to cut off the current from the machine when the latter is notbeing operated.

12. I11 a cloth cutting machine the combination of a knife, a guard forit, an operating handle, a movable portion thereon adapted to be movedinto an operating position to operate the machine and into an offposition when the machine is not being operated and means forautomatically moving said guard into guarding position when said movablehandle portion is moved into off position.

13. In a cloth cutting machine the combi nation of a knife, a guardnormally guarding the same, an operating handle and means connected tothe latter whereby said guard is automatically operated to expose saidknife when the operator grasps the said handle to operate the machine.

14. In a cloth cutting machinethe combination of a knife, a guard forthe same, an operating handle, a movable portion thereon and meanscontrolled by said movable handle portion for automatically operatingsaid guard into a non-guarding position with relation to the said knife.

15. In a cloth cutting machine the combination of a knife, a guard forthe same, means for operating said guard and devices for rendering saidoperatin means inactive at predetermined moments curing the operation ofthe machine.

16. In a cloth cutting machine the combination of a knife, a motor foroperating said knife, a guard for the latter, an operating handle, aswitch mechanism controlling the current to said motor and means forautomatically cutting off the current from the motor and moving the saidguard into guarding position when said handle is being manipulated bythe operator.

17. In a cloth cutting machine the combination of a knife, a motor foroperating said knife, a guard for the latter, a switch mechanismcontrolling the current to said motor, an operating handle and meansconnected to said handle for automatically cutting ofli the current fromthe motor and moving the said guard into guarding position when saidhandle is being manipulated by the operator.

18. In a cloth cutting machine the combination of a knife, a motor foroperating said knife, a guard for the latter, a switch mechanismcontrolling the current to said motor, an operating handle, a movableportion thereon and means actuated by said movable handle portion forcutting off the current from the motor and moving said guard intoguarding position.

19. In a cloth cutting machine the combination of a knife, a motor foroperating the same, a guard for said knife, a switch mechanismcontrolling the current to said motor, an operating handle, a movableportion thereon and automatic means for maintaining said movable handleportion in an off position, the said guard in its guarding position andfor operating said switch mech anism to cut off the current from thesaid motor while the said machine is not being operated.

20. In a cloth cutting machine the c0mbination of a standard, a knifemounted thereon, a guard and sharpening means located in front of saidknife, a handle located in the rear of said knife, a movable portion onsaid handle and connections between said movable handle portion and thesaid guard and sharpening means for operating the same located to theone side of the said standard.

21. In a cloth cutting machine the combination of a knife, a guard andsharpening means for said knife, a shaft operatively connected to saidguard and sharpening means, a gear on said shaft for operating saidguard, a second gear on said shaft for operating the said sharpeningmeans and mechanism for rendering said first gear inactive when the saidsecond gear is operated.

22. In a cloth cutting machine the combination of a knife, a guard andsharpening means for said knife, a shaft operatively connected to saidguard and sharpening means, gears on said shaft in driving connectiontherewith for operating said guard and sharpening means and means forunclutching the guard operating gear from the said shaft when thesharpening means operating gear is being operated to actuate thesharpening means.

23. In a cloth cutting machine the combination of a knife, a guard andsharpening means for said knife, an operating handle, a movable portionthereon, means for operating said guard from the said movable handleportion and means adjacent to said handle for operating the saidsharpening means.

2 n a cloth cutting machine the combination of a knife, a guard andsharpening means for the same, a shaft, means for rotating said shaft adistance in one direction to operate the said guard, other means forrotating said shaft a further distance in the same direction to operatethe said sharpening means and a mechanism for actuating the saidrotating means.

25. In a cloth cutting machine the combination of a knife, a guard andsharpening means for the same, a shaft, a first gear fast on said shaftfor operating said sharpening means, a second gear loose on said shaftfor operating said guard, a clutch mechanism for normally clutching saidsecond gear to the said first gear, mechanism for rotating the firstgear and means for automatically unclutching said second gear when thesaid first gear is operated.

26. In a cloth cutting machine the combination of a knife, a guard andsharpening means for the same, a shaft, a first gear fast,

on said shaft for operating said sharpening means, a second gear looseon said shaft for operating said guard, a clutch mechanism for normallyclutching said second gear to the said first gear, mechanism forrotating the first gear and means operated by said mechanism forautomatically unolutching said second gear when the said first gear isoperated.

27. In a cloth cutting machine the combination of a knife, a guard forsaid knife, a gear for operating said guard, a shaft to which said gearis secured, a second gear loosely mounted on said shaft, clutching meansfor operatively connecting said second gear and shaft, a rack foroperating said gear, means for operating said rack and means foradjusting the movement of the latter.

28. In a cloth cutting machine the combination of a knife, sharpeningmeans for 29. In a cloth cutting machine, the combination of a knife, aguard for said knife, an operating handle, a movable handle portionthereon having an operable and an 01T- position and connectionscontrolled by said movable handle portion for automatically moving saidguard into non-guarding position when said movable handle portion ismoved into its operable position and for automatically moving said guardinto guarding position when said handle portion is moved into its offposition.

30. In a cloth cutting machine, the combination of a knife, a guard forsaid knife, an operating handle, a movable handle por tion thereonhaving an operable and an offposition and connections controlled by saidmovable handle portion for automatically moving said guard intonon-guarding position when said movable handle portion is moved into itsoperable position and for automatically moving said guard into guardingposition when said handle portion is moved into its off position, andmeans for automatically 'moving said handle portion into its offposition.

31. The combination of a knife, a movable guard for the same, a brakefor said knife, a movable handle and connections between the latter andthe said knife guard and brake for automatically moving said guard intoguarding position when the said brake is being applied.

Signed at New York, N. Y., this 16th day of July 1914.

EDWARD M. WARING.

Witnesses:

IVAN KONIGSBERG,

K. G. LE ARI).

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. i

